BALANCE_DIRTY_PAGES_(9) Memory Management in Linux BALANCE_DIRTY_PAGES_(9)NAMEbalance_dirty_pages_ratelimited_nr - balance dirty memory state
SYNOPSIS
void balance_dirty_pages_ratelimited_nr(struct address_space * mapping,
unsigned long nr_pages_dirtied);
ARGUMENTS
mapping
address_space which was dirtied
nr_pages_dirtied
number of pages which the caller has just dirtied
DESCRIPTION
Processes which are dirtying memory should call in here once for each
page which was newly dirtied. The function will periodically check the
system´s dirty state and will initiate writeback if needed.
On really big machines, get_writeback_state is expensive, so try to
avoid calling it too often (ratelimiting). But once we´re over the
dirty memory limit we decrease the ratelimiting by a lot, to prevent
individual processes from overshooting the limit by (ratelimit_pages)
each.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 BALANCE_DIRTY_PAGES_(9)
